| Author |
Message |
vw_bud
Samba Member
Joined: March 23, 2008
Posts: 265
Location: Bradford, PA
|
 Posted: Sat Sep 25, 2021 4:29 pm Post subject: Distributor drive gear difference? |
 |
|
| Hey guys I have to ask as my 75 bus' distributor will not stay timed like it's kinda wobbly so I am going to replace everything because I already have the parts. Anyways is the type 1 engine and type 4 engine distributor drive shaft the same? |
|
| Back to top |
|
 |
Wildthings
Samba Member
Joined: March 13, 2005
Posts: 50338
|
| Posted: Sat Sep 25, 2021 6:00 pm Post subject: Re: Distributor drive gear difference? |
|
|
| The cog on the bottom of the shaft is supposed to be wobbly. If your hold down clamp is bent to crap you might not be able to get sufficient pressure against the distributor body to keep it from turning. How are you setting the timing? It is best to set it at 28° BTDC @ 3800+ rpms, with the hose(s) removed and plugged. |
|
| Back to top |
|
|
Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 76911
Location: Sneaking up behind you
|
| Posted: Sat Sep 25, 2021 6:51 pm Post subject: Re: Distributor drive gear difference? |
|
|
| vw_bud wrote: |
| is the type 1 engine and type 4 engine distributor drive shaft the same? |
The are different.
Type 4
Type 1
_________________
Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
Member #1009
#BlueSquare |
|
| Back to top |
|
|
vw_bud
Samba Member
Joined: March 23, 2008
Posts: 265
Location: Bradford, PA
|
| Posted: Sat Sep 25, 2021 9:36 pm Post subject: Re: Distributor drive gear difference? |
|
|
| Thanks guys and the timing keeps jumping from 12btdc to 0 and back and forth and there is no crank endplay so I'm totally confused |
|
| Back to top |
|
|
SGKent
Samba Member
Joined: October 30, 2007
Posts: 41031
Location: Citrus Heights CA (Near Sacramento)
|
| Posted: Sat Sep 25, 2021 9:56 pm Post subject: Re: Distributor drive gear difference? |
|
|
| vw_bud wrote: |
| Thanks guys and the timing keeps jumping from 12btdc to 0 and back and forth and there is no crank endplay so I'm totally confused |
try another timing light. If it continues be sure you have a spring between the distributor and gear. ALSO, if your idle is too high, say close to 900 - 1000 Rpm, you may b seeing the distributor mechanical advance kick in and out.
_________________
“Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
|
| Back to top |
|
|
Wildthings
Samba Member
Joined: March 13, 2005
Posts: 50338
|
| Posted: Sat Sep 25, 2021 10:02 pm Post subject: Re: Distributor drive gear difference? |
|
|
| There are thrust washers both between the drive cog and the body of the distributor and inside the distributor body. When they fail and disappear (which is common) the distributor shaft can move up and down as can the distributor drive. This will cause a major scatter of the timing. |
|
| Back to top |
|
|
|
